I have a 1999 pontiac grand am and the tail lights and the dash lights do not work. I have checked all the fuses and bulbs. I discovered that the connector for the reverse lights on the bottom of the car is missing. Would that keep those lights from work.... every other light in the car works! HELP!

You have a positive (hot) wire that is shorting out to the ground wire or the frame or body of the car , it's probably under the back along the frame check bulbs in rear good luck

This MAY help.

Interior Fuse Box Location 1999 2005 Pontiac Grand Am 2000 Pontiac Grand...

Check this link to get insight into the problem:

Tail light is intermittently out on Dodge Caravan

Also check this YT video for details about removing the tail light assembly.

How To Install Replace Taillight Dodge Caravan Chrysler Town and Country...

sounds like a fuse or relay ,have you checked the fuse box drivers side lower dash for headlight fuse(s) also in engine bay there is another fuse box with relays ,list will be on the cover ,i'd start there as power is going to bulb on one circuit , other than that the switch may not be working fully

Most likely the multi-function switch (head light switch).

check power from light switch

no, they are not the same. The multifunction switch is on the steering column and controls wipers, turn signals, and hi/low beam headlights. Dash switch is on the dash and generally turns lights on and off and frequently also controls brightness of dash lights. I had a Camry that had the same thing happening...ended up having a toggle switch put in to control the tail lights...fixed the issue.

check tail lite bulbs,wrong bulb or improper installation may cause short blowing fuse.

check the bulbs of your running lights if one of them is burned out it will keep the dash light working, this is designed for you to check your tail lights so you don't get a ticket, just replace the bulb that is burned out.

You may need to go back and check the bulbs again,,, because if it's using a standard 1157 bulb, the bulb plugs in "only one way",,, but is easy to get installed incorrectly,,, causing a short which blows the fuse.
If you find this not to b the case,,, then remove the emergency flasher switch from the fuse box along with all the light bulbs, front and back. Then reinstall a new fuse.
If it still blows the fuse without bulbs in it, the you either have a faulty bulb seat or a wire is pinched and grounded to the body somewhere. (this will require an intense visual inspection)